Janet Jackson and her newborn son Eissa are reportedly resting at home with nursing staff "waiting on them hand and foot".

The 50-year-old star and her husband Wissam Al Mana welcomed their baby boy into the world last week, and it's said the new mum had an "easy birth".

"Janet took extra care to rest," an insider told Us Weekly magazine, who added that mother and baby are getting the very best care. "It was an easy birth."

The insider said that they are both living "a lavish life", adding: "Nurses are waiting on them hand and foot."

It comes after her dad Joe shared his delight at becoming a grandfather again.

Reacting to the happy news, Joe, 88, said: “Congratulations to my daughter Janet Jackson on the birth of my Grandson. Making me a grandfather again! Wishing you all the love and happiness a father could wish a daughter.”

His message, posted on his official website, came after Janet’s sister LaToya, 60, tweeted : "How exciting! @JanetJackson, Jan and Wissam just gave birth to a beautiful baby boy!!! Congratulations!!! (sic)."

Janet’s rep confirmed the baby’s birth last week via a statement reading: "Janet Jackson and husband Wissam Al Mana are thrilled to welcome their new son Eissa Al Mana into the world. Janet had a stress-free healthy delivery and is resting comfortably."

The singer has kept a low profile since news of her pregnancy surfaced last year, but did update fans in November to assure them she was “doing well.”

“I feel your love and prayers,” she added.

Janet postponed a 2016 tour after her pregnancy news (Image: Getty)

Rumours of her pregnancy began to surface in May when she postponed a planned tour but it wasn’t until October that Janet confirmed the news, saying: “We thank God for our blessing.”

A source told Us Weekly at the time: "Janet is superexcited. She’s doing great. Janet feels really strong and is just so excited for the baby to come. She feels like this is one of the best things ever to happen to her, she says.”

Janet married Qatari businessman Wissam in 2012.

Instead of having a lavish wedding, the couple said they tied the knot in a "quiet, private, beautiful" ceremony and donated money to children’s charities close to their hearts.